Vibrating machine



M y 27, 1930. A. E. R. BLOMQUIST 1,160 518 V I BRATING MACHINE FiledJuly 9, 1928 C5 Sheets-Sheet l May 27, 1930.

A. E. R. BLOMQUIST VIBRATING MACHINE Filed Ju1y 9, 1928 3 Sheets-Sheet 2OW,MMM

May 27, 1930. A. E. R. BLOMQUIS'i' VIBRATING MACHINE Filed July 9, 19285 Sheets-Sheet 3 ll l Patented May 27, 1930 AUGUST E. R. BLOMQUIST, ononnvnnnnn, onto vrnnn'rrn'e MACHINE i Application filed J'ulyfl, 1928.Serial No. 291,375.

This invention relates to improvements in vibrating machines of theclass in which an applicator strap or belt, that is adapted forengagement about a part of the body to be treated, is connected tovibrating members or cranks that act to jerk the strap or beltalternately in opposite directions thereby to set up a vibratory actionthat is imparted to the part of the body wherewith the belt is engaged.

The primary purpose of the invention is to provide a machine of theabove mentioned class wherein either or both the speed of the machineand the length of the stroke may be changed by simple and convenientmanipulatio'ns. i

Further objects are to provide a substantial, durable and rigid machineof the class aforesaid that is very e'fiicient; that incorporatesmechanism that is relatively simple of construction, positive of action,and convenient of adj ustmentfor changing the speed ofthe machine; andto provide means, possessing like qualities, for adjusting the stroke ofthe machine. i With the foregoing and additional objects in view thatwill becomeapparentas this deannexed hereto and illustrated, accordingto the present preferred embodiment of the invention, 1n theaccompanying drawings. Inthe drawings, Fig. 11s a front elevatioinandFig. 2 a fragmentary side elevation, ofmy improved vibrating machlne;Fig.3 1s

a plan View of the machine withthe appliicator belt orlstrap shown inbroken lines;

ofthe preceding views and in which the mid Fig. l is a centralverticalseotionthrough the machine onjthe llnes 4. i ofFigs-l, 3 and 5,and on. a scale somewhat enlarged over that dle portion of the machineis broken. away so asto shorten the view and permit rofwthe largersoaleyFig. 5 is a-horizontal section that is taken substantially: on thelinejofifi of Fig. 4;; Fig. 6 is a detail of thewgearing appearing inFig. 5 and showing the driver shifted to its position opposite thatillustrated n the preceding figure; Fig. 7 is an end view of one of thecrankdisks and its pin, on a further enlarged scale; Fig. 8 isya sectionon the correspondingly numbered line of Fig. 7; and Figs. 9and 10 aresectionson the line a-a of Fig. 8, the former being taken as thoughlooking in the direction of the arrows 9, and the latter as in thedirection of the arrows 10. i

The machine. is of the pedestal type and the frame structure thereofincludes a base i 1, a column 2, and a gear casing 3. The base is hollowand, generally, of conical shape, and its under side is formed withsockets 5 within whichpads .6 of rubber or other suitable material areheld by means of clamping.

An electric motor 10 disposed within the base 1 with its armature shaft11 substantially coincident with the vertical axis of the base.

The motor may be supportedby elongated screws 12 whose upper ends arescrewed into lugs 18 that are shown as formed integral with the base,the said screws 12 preferably being those which serve to hold thepartsof the motor casing together.

Fitted to the top ofthe base l, and secured "thereto as by means of'capsorews15, is the lowerend of the hollow column 2. ,The upper end of thiscolumn has a circular opening in which the cylindrical extension 16 of agear easing 3 is secured. The body portion of the gear casing is,generally, in ithe shape of a'bowl and is surmounted by a cover 17 thatis 'heldto the oasingby screwsl8. Adj acent its forward side,the casing3 is formed with? laterally extending hollow bosses 20. Fixed withineach ofsaid bosses QQis a cylindrical shell 21 having, intermediate itsvends, an internal flange 22 that supports anflantifriction bearing 23..Clamped between the T OFFICE outer side of the flange 22 of each of theshells 21 and a ring nut 24 that is screwed into the outer end of theshell is a retainer 25 for an oil ring 26 of suitable packing material.5 Rotatably supported within the ring nuts 24 and retainers 25, by thebearings 23, are shafts 28 that carry crankdisks 29 at their outer ends,said shafts having grooves 30 that are occupied by the inner edges ofthe oil rings 26. Collars 31 are pinned or otherwise secured to theshafts 28 inwardly of the bearings 23 for retaining the shafts againstoutward movement. Mounted upon, and keyed or otherwise secured to, thereducedinner ends of the crank shafts 28 is a unit 35 incorratingaxially spaced worm wheels 36 an 37 that are of difl erent diameters. V

The cylindrical extension 16 of the casing 3 has a. correspondinglyshape'dibore :wherego in is journaled a hollow cylindrical block "mthutis provided with diametricallyop- (1 tapered sockets 41 for thereception of econical end 42 of alocking screw 43 that "is threadedadjacent its outer end and oper- 15 ates within a "tapped hole in thecasing 3, the screw being equipped with a knurled head 44. J ournaledwithin anti-friction bearings 45 that are suitably fitted within the 11per and lower ends of the block '0 ins aft 46 that is equipped with aworm 47 for cooperation with the previously men- "tioned 'wormwheels 36and 37 of the unit 35. A packing device 48 seals the joint between. thelower 'end of the shaft 46 and the block "be retained in the casing.

- e shaft 46 is driven from the motor "shaft-l1, in the presentinstance, through the intervention o-f-a flexible shaft 50, the joined osendsof the'base 1 and column 2 having aligned apertures 51 for theaccommodation of the flexible shaft. An electric switch 52 ie'shownasmounte'd within the upper front Ition of the column 2, and wires areled herelfrom, through-an opening 53 in the column, downwardly'throughthe column and through the openings-51 to the motor, but

for thesake of clearance these wires are omitted from the drawings.

A spindleis journaled within a central hdllow boss of the'cover 17 andat its upper end is 'equi ped with an operating handle 61. Secur to thelower end of the spindle iis'anarm 62 (Figs. 4, 5 and 6) whose free 856113 is {provided with an aperture within I which is'journaled the upperend of the'shaft F146 thatcarries the worm 47.

From-theforegoing description it is evi- WL 'dentthatjwhenthe switch 52is closed and "to 1 'fihemotorw energized as aconsequencether'eofitherotation of the motor shaft will be f ttedthrough' the flexible shaft 50 to ithe'shaft46, and thence, through theworm "4711M one or the other of the worm wheels or 371:0 the crankshafts 28. Assuming B 40 so that a quantity of suitable lubricant thatthe motor runs at a substantially constant speed, the speed of thecranks may be changed by first retracting the locking screw 43 so as towithdraw its inner end from the socket 41 of the block 40 that it thenoccupies, and then turning the spindle 60 by means of the operatinghandle 61 to swing the worm 47 out of engagement with one worm wheel andinto mesh with the other. The doing of this rotates the block 40 through180 degrees and presents the other recess 41 of said block in receivingrelation to the locking screw 43, whereupon said screw may be turned bythe knob 44 to project its inner end into said recess.

In addition to changing the speed of machines of the class in question,it is desirable to change the length of the stroke. This I .accomplishby making the crank pins shiftable toward and from the center of thecrank disks 29.

Each crank pin 65 extends from a relatively fiat circular head 66 of astud 67 that is journaled within a recess 68 of the corresponding crankdisk 29, the peripheral portion of the head 66 having a plain inner facethat engages a flat annular surface on the crank disk. The inner face ofthe head 66 has a plurality of depressions 70 that are spaced apart likedistances circumferentially of the head, and a ball 71 that iscontained, with a spring 72, within a recess in the crank disk, is urgedoutwardlyby said spring into any one of the depressions 70 that isbrought into register with the ball. This an indexing means for enablingboth crank pins 65 to'be similarly adjusted with respect to their crankdisks; but the crank pins are adapted to be held in fixed relation totheir disks by means which I shall now describe. The inner end of eachof the studs 67 has a circumferential groove whose walls, especiallytheir inner walls, are beveled, as-shown at75. Operating within a radialbore of each crank disk is a bolt 76 whose inner end is shaped forcooperation with the tapered wall of the stud 67, and said bolt isadapted to be forced inwardly by means of a screw 77 that is threadedinto the enlarged tapped outer end of the bore that is occupied by saidbolt. When the bolt is forced inwardly it cams the stud 67 axially ofthe recess 68 and draws its head 66 into such firm contact with theunderlying portion of the crank disk 29 as to frictionally hold thecrank 65 against displacement from the position wherein it is'yieldinglyheld by the ball 71.

Having thus descrbed my invention, what I claim is 1. In a vibratingmachine, the combination of a vibrating element, mechanism for vibratingthe same including axially spaced gears, a member rotatable on2111213115 inter mediate the planes of said gears, power transmittingmeans supported by said member portion of said structurefor rotation onan ill) 2. In a vibrating machine, the combina tion of a supportingstructure, vibrating mechanism sustained thereby and including axiallyspaced gears, a member supported by the structure for rotation on anaxis inter.

mediate the planes of said gears, power transmitting means carried bysaid member and adapted to be swung through an arc concentric with theaxis of rotation of said mem ber into driving engagement with either ofsaid gears by the oscillationof said member, means supported by thestructure for rotation substantially on the axis of said member andbymeans of which the member is adapted to be rotated through theintervention of the power transmitting means, driving mechanism, andoperative connections between said mechanism and the power transmittingmeans.

3. In a vibrating machine, the combination of a pedestal-like supportingstructure, driving mechanism within the base of said structure andhaving a drivingshaft whose axisis substantially coincident with that ofthe structure, a member supported by the upper portion of said structurefor rotation on an axis substantially coincidentwith that of thestructure, a driver and its shaft rotatably supported by said memberwith its axis substantially vertical and eccentric with respect to thatof the member, vibrating mechanism sustained by the structure andinvolving gears spaced apart along a common axis that is loactecl to oneside of and disb posed at substantially right angles to the axis of thecasing, the driver being adapted to be shifted into engagement witheither of said gears by the oscillation of said member, and flexibledriving connections between the shaft of said driver and the shaft ofthe aforesaid driving mechanism.

4. In a'vibrating machine, the combination of a pedestal-like supportingstructure, dr1v ing mechanism within the base of said structure andhaving a driving shaft whose axis is substantially coincident with thatof the structure, a member supported by the upper axis substantiallycoincident with thatof the structure, a shaft rotatably supported bysaid member with its axissubstantially vertical and eccentric withrespect to that of the member, a driver carried by said shaft,

vibrating mechanism sustainedby the structure and involving gears spacedapart along adapted to be ber,

the other a common axis that is located to one sidejof and disposed atsubstantially right angles totlle axis ofthe casing, said driver beingshifted into engagement with either of said gears by the oscillationofsaid member, means forretaining said member in the respectivepositions it occupies when the driver is in engagement with thesaidgears, and driving connections between the shaft of said driver and theshaft of the aforesaid drivingmechanism and which is of suchnature as topermit of the oscillation of the aforesaid member. 1

5; In a vibrating machine, the combination of a pedestal-like supportingstructure, driving mechanism within the base of said structure andhaving a driving shaft whose axis is substantially coincident with thatof the structure, a member supported by the upper portion of saidstructure for rotation on an axis substantially coincident with that ofthe structure, a driver and its shaft rotatably supported by said memberwith its axis substantially vertical and eccentric with respect to thatof the member, vibrating mechanism sustained by the structure andinvolving gears spaced apart along a common axis that is located to oneside of and is disposed at substantially right angles to the axis of thecasing, the driver being adapted to be shifted into engagement witheither of said gears by the oscillation of said memmeans for retainingsaid member in the respective positions it occupies when the driver isin engagement with the said gears, driving connections between the shaftof said driver and the shaft of the aforesaid driving mechanism andwhich is of such nature as to permit of the oscillation of the aforesaidmember, a spindle journaled within the supporting structure for rotationon an axis substantially coincident with that of said member, andconnections through which the memer is adapted to be rotated by'saidspindle through the intervention of-the driver shaft.

6. In a vibrating machine, the combination of a supporting structurecomprising a base, pedestal, and surmounting casing, cranks disposed onthe opposite sides of said casing and having a common rotating axis, amember within the casingand connected to the cranks for driving thesame, said member involving axially spaced gears, a member 'journaledwithin the supporting structure substantially on the vertical axis ofthe casing and between the planes of said gears, a shaft journaledwithin said member and having its axis eccentric with respect to that ofthe member, a driver on said shaft for said gears, said members berotated in one direction to engage the cooperation with being adaptedto" driver with one of the gears, and in the "opposite direction toengage the driver with gear, means for retaining the member in either ofits extreme pos t ons, a

spindle journaled within the top of the easing with its axissubstantially coincident with the axis of the aforesaid member,connections through which said member is adapted to be '0s0iilatedthrough the intervention of the aforesaid shaft, an operating handlecarried the spindle above the casing, driving mechanism within the base,and flexible drivhigoonneetions between said mechanism andiflmyoforesaid shaft, said connections being housed within the pedestal0f the structure.

In testimony whereof, I hereunto affix my 7 signature.

AUGUST E. R. BLOMQUIST.

